CompTIA A+ Core 2 Question H-98

A technician receives a trouble ticket about intermittent wireless on a users laptop while they are at home but not at work. Which of the following could be the cause of this issue?

A. While at home, the user is too close to their access point
B. Encryption is set differently at home then at work
C. Cordless phone is interfering with signal at home
D. Laptops wireless is set to only work while at work

Correct Answer: C